| Leichtenstern's phenomenon | <clinical sign> Tapping gently one of the bones of the extremities causes the patient to draw back violently, sometimes with a loud cry; noted in cases of cerebrospinal meningitis. Synonym: Leichtenstern's phenomenon. (05 Mar 2000) |
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| LE phenomenon | The formation of LE cells in bone marrow or blood on adding serum from patients with disseminated lupus erythematosus. (05 Mar 2000) |
| Lucio's leprosy phenomenon | An acute form occurring in pure diffuse lepromatous leprosy presenting irregularly shaped, intensely erythematous, tender plaques, especially of the legs, with tendency to ulceration and scarring. Synonym: lazarine leprosy, Lucio's leprosy phenomenon. (05 Mar 2000) |